Got the paddles and gave Kaboom a try. They are very good paddles. I would give them a B+
I think for me, I am accustomed to the original paddles. The movement on these requires *slightly* more effort than originals, which gives a subtle feeling of drag because I am not used to the resistance. However, I must admit, during the hectic rounds of Kaboom, you don't notice. The fire button gives a bit of a thump instead of a click. While different, I consider this slightly better feedback from the controller.
It boils down to personal preference, and I could understand how someone might prefer these paddles to original. Worth the money, though.